CLST to GMT Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.
Iceland and Ghana stay on GMT (UTC+0).
Quick answers
Selected conversion
9:00 am09:00 CLST (UTC-3), Oct 8, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 8, 2026
CLST is 3 hours behind GMT.
CLST and GMT examples
These examples always use CLST (UTC-3) and GMT (UTC+0). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
CLST is 3 hours behind GMT.
How the time difference changes
For most of the year, CLST is 3 hours behind GMT. At other times of the year, CLT is 4 hours behind GMT.
For most of the year, working hours of 9:00 am to 5:00 pm in CLST correspond to 12:00 pm to 8:00 pm in GMT. At other times of the year, working hours of 9:00 am to 5:00 pm in CLT correspond to 1:00 pm to 9:00 pm in GMT.For most of the year, working hours of 09:00 to 17:00 in CLST correspond to 12:00 to 20:00 in GMT. At other times of the year, working hours of 09:00 to 17:00 in CLT correspond to 13:00 to 21:00 in GMT.
Compare CLST time with GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Chile Summer Time is 3 hours behind Greenwich Mean Time.
9:00 am09:00 in CLST is 12:00 pm12:00 in GMT
CLST to GMT call time
Best time for a conference call or a meeting is between 9am-2pm09:00-14:00 in CLST which corresponds to 12pm-5pm12:00-17:00 in GMT
9:00 am09:00 Chile Summer Time (CLST). Offset UTC -3:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
9:00 am09:00 CLST / 12:00 pm12:00 GMT
| CLST | GMT |
|---|---|
| 12:00am | 3:00am |
| 1:00am | 4:00am |
| 2:00am | 5:00am |
| 3:00am | 6:00am |
| 4:00am | 7:00am |
| 5:00am | 8:00am |
| 6:00am | 9:00am |
| 7:00am | 10:00am |
| 8:00am | 11:00am |
| 9:00am | 12:00pm |
| 10:00am | 1:00pm |
| 11:00am | 2:00pm |
| 12:00pm | 3:00pm |
| 1:00pm | 4:00pm |
| 2:00pm | 5:00pm |
| 3:00pm | 6:00pm |
| 4:00pm | 7:00pm |
| 5:00pm | 8:00pm |
| 6:00pm | 9:00pm |
| 7:00pm | 10:00pm |
| 8:00pm | 11:00pm |
| 9:00pm | 12:00am |
| 10:00pm | 1:00am |
| 11:00pm | 2:00am |
| 00:00 | 03:00 |
| 01:00 | 04:00 |
| 02:00 | 05:00 |
| 03:00 | 06:00 |
| 04:00 | 07:00 |
| 05:00 | 08:00 |
| 06:00 | 09:00 |
| 07:00 | 10:00 |
| 08:00 | 11:00 |
| 09:00 | 12:00 |
| 10:00 | 13:00 |
| 11:00 | 14:00 |
| 12:00 | 15:00 |
| 13:00 | 16:00 |
| 14:00 | 17:00 |
| 15:00 | 18:00 |
| 16:00 | 19:00 |
| 17:00 | 20:00 |
| 18:00 | 21:00 |
| 19:00 | 22:00 |
| 20:00 | 23:00 |
| 21:00 | 00:00 |
| 22:00 | 01:00 |
| 23:00 | 02:00 |
Chile Summer Time
Offset: CLST is 3 hours behind Greenwich Mean Time (GMT) and is used in South America
Countries using this time zone: Chile
Principal Cities: The largest city in the CLST time zone is Santiago in Chile, with about 4.837 million people. Other major cities in this time zone include Puente Alto, Antofagasta, Vina del Mar, Valparaiso.
Daylight Saving: Chile Summer Time (CLST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Chile Standard Time (CLT).
Start: Chile Summer Time (CLST) started on Sunday, September 6, 2026 at 12:00 am00:00 local time and clocks were set one hour forward to Sunday, September 6, 2026, 1:00 am01:00. Daylight saving starts annually on the first Sunday of September.
End: Chile Summer Time (CLST) ends on Sunday, April 4, 2027 at 12:00 am00:00 local time and clocks are set one hour back to Saturday, April 3, 2027, 11:00 pm23:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.
CLST representations, usage and related time zones
- -03 - basic short
- -0300 - basic
- -03:00 - extended
- -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
- Papa - Military abbreviation for CLST
- P - short form of 'Papa'
- ADT - Atlantic Daylight Time
- PMT - Pierre & Miquelon Standard Time
- PMST - Pierre & Miquelon Standard Time
- AMST - Amazon Summer Time
- ART - Argentina Time
- BRT - Brasília time
- CLST - Chile Summer Time
- FKST - Falkland Islands Summer Time
- GFT - French Guiana Time
- P - Papa Time Zone
- PYST - Paraguay Summer Time
- SRT - Suriname Time
- UYT - Uruguay Time
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT time zone is London in United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Dakar, Kumasi.
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.
GMT representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
- Zulu - Military abbreviation for GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone